GB402529A - A process for the production of benzoic acid and benzoates - Google Patents
A process for the production of benzoic acid and benzoatesInfo
- Publication number
- GB402529A GB402529A GB20548/32A GB2054832A GB402529A GB 402529 A GB402529 A GB 402529A GB 20548/32 A GB20548/32 A GB 20548/32A GB 2054832 A GB2054832 A GB 2054832A GB 402529 A GB402529 A GB 402529A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali
- oxidation
- bichromate
- alkaline earth
- under pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 title abstract 7
- 239000005711 Benzoic acid Substances 0.000 title abstract 3
- 235000010233 benzoic acid Nutrition 0.000 title abstract 3
- 150000001558 benzoic acid derivatives Chemical class 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 9
- 239000003513 alkali Substances 0.000 abstract 6
- 230000003647 oxidation Effects 0.000 abstract 5
- 238000007254 oxidation reaction Methods 0.000 abstract 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 4
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 abstract 4
- 239000007800 oxidant agent Substances 0.000 abstract 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000003518 caustics Substances 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- 239000011777 magnesium Substances 0.000 abstract 2
- 229910052749 magnesium Inorganic materials 0.000 abstract 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 abstract 2
- 239000001095 magnesium carbonate Substances 0.000 abstract 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract 2
- 239000000395 magnesium oxide Substances 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 1
- -1 alkaline earth Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
- PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 abstract 1
- KIEOKOFEPABQKJ-UHFFFAOYSA-N sodium dichromate Chemical compound [Na+].[Na+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KIEOKOFEPABQKJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/02—Oxides or hydrates thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Bichromate used as oxidising agent in the process of the oxidation of toluene to benzoic acid is regenerated by treating the chromic oxide-containing residue with sodium chromate and caustic alkali, alkaline earth or alkali or alkaline earth carbonate or magnesia or magnesium carbonate and oxygen-containing gases under pressure. A similar regeneration may be effected when magnesium bichromate is employed in the first instance as oxidising agent.ALSO:Benzoic acid and benzoates are obtained by oxidation of toluene with bichromates or monochromates at temperatures above 100 DEG C. and under pressure employing, in addition to the material employed for oxidation, excess bichromate or a further bichromate to neutralise the alkaline substances formed in the course of the reaction. Alkali, alkaline earth and magnesium bichromates are mentioned as suitable additional bichromates. The oxidising agent may be regenerated by adding caustic alkali, alkaline earth, alkali or alkaline earth carbonate, magnesia or magnesium carbonate, and subjecting the mixture to oxidation with an oxygen-containing gas under pressure. According to an example pure toluene is treated with sodium bichromate solution at 250--300 DEG C. under pressure in sufficient quantity to neutralise the alkali formed during the reaction, and the products are worked up for benzoate and monochromate, the oxidising agent being regenerated by oxidation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16867/33A GB409755A (en) | 1932-05-26 | 1933-06-13 | A process for the production of benzoic acid and benzoates |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1998925X | 1932-05-26 | ||
| DEB156269D DE585332C (en) | 1930-08-05 | 1932-06-24 | Process for the preparation of benzoic acid and benzoic acid salts |
| DEB156270D DE585429C (en) | 1930-08-05 | 1932-06-24 | Process for the preparation of benzoic acid and benzoic acid salts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB402529A true GB402529A (en) | 1933-12-07 |
Family
ID=40497586
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20548/32A Expired GB402529A (en) | 1932-05-26 | 1932-07-20 | A process for the production of benzoic acid and benzoates |
| GB20547/32A Expired GB402882A (en) | 1932-05-26 | 1932-07-20 | A process for the production of benzoic acid and benzoates |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20547/32A Expired GB402882A (en) | 1932-05-26 | 1932-07-20 | A process for the production of benzoic acid and benzoates |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB402529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2647584C1 (en) * | 2017-07-04 | 2018-03-16 | Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт органической химии и технологии" (ФГУП "ГосНИИОХТ") | Method of benzoic acid preparation |
-
1932
- 1932-07-20 GB GB20548/32A patent/GB402529A/en not_active Expired
- 1932-07-20 GB GB20547/32A patent/GB402882A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2647584C1 (en) * | 2017-07-04 | 2018-03-16 | Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт органической химии и технологии" (ФГУП "ГосНИИОХТ") | Method of benzoic acid preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| GB402882A (en) | 1933-12-14 |
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